package com.heima.kafka.sample;

import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.producer.*;

import java.util.Properties;
import java.util.concurrent.ExecutionException;

/**
 * 生产者
 */
@Slf4j
public class StreamProducer {

    public static void main(String[] args) throws ExecutionException, InterruptedException {
        //1.kafka的配置信息
        Properties properties = new Properties();
        //kafka的连接地址
        properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "47.97.69.121:9092");
        //发送失败，失败的重试次数
        properties.put(ProducerConfig.RETRIES_CONFIG, 5);
        //消息数据压缩配置
        properties.put(ProducerConfig.COMPRESSION_TYPE_CONFIG, "snappy");//snappy lz4 gzip
        //消息key的序列化器
        properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
        //消息value的序列化器
        properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");

        //2.生产者对象
        KafkaProducer<String, String> producer = new KafkaProducer<String, String>(properties);

        //封装发送的消息
        ProducerRecord<String, String> record = new ProducerRecord<String, String>("itcast-topic-input", "hello kafka");
        ProducerRecord<String, String> record1 = new ProducerRecord<String, String>("itcast-topic-input", "hello stream");

        //3.发送消息
        producer.send(record);
        producer.send(record1);

        //4.关闭消息通道，必须关闭，否则消息发送不成功
        producer.close();
    }

}